finding yesterday and tomorrrow without using date.time module

[samsonite]

much thanks for all the replies.

Please, get a glance to this enhancement: the use of getch() to stop output on the screen, as per attachments. Cheers
[Image: vtGYAhLu]

# ------- mycal.py ----------
import calendar
import os, platform
import msvcrt
#
def getch():
        msvcrt.getch()
#
calendar.prcal(2019)
print("Type a key to exit!")
getch()
print("Okay")